#include <stdio.h>
int main(){
/*	int a=1,b=2,c;
	c=a;
	a=b;
	b=c;
	printf("%d,%d",a,b);
	
	
	char x;
	int y;
	x=98;
	y='d';
	printf("%d",y);*/
	char c1='A',c2;
	c2=c1+32;
	printf("%c,%c",c1,c2);
	return 0; 
}
